The short version
- Look at the crown, the trunk, and the base. Dieback in the top of the crown is one of the clearest signs.
- Scratch test: green, moist tissue under the bark means that part is alive. Brown and dry means it is dead.
- Mushrooms or conks on roots or the trunk signal advanced decay, per UGA Extension and USDA.
- USDA: dead trees and large dead or hanging limbs need action right away if they can hit something.
Roanoke Tree Removal is a local referral service: we pass your request to an independent, local tree crew. We are not a contractor or a government office, and this page is general information, not legal advice.
Start with the crown
UGA Extension's Is My Tree Dying? circular lists the signs of stress or decline: tip dieback, leaf or needle yellowing or browning, early leaf shedding, undersized leaves, and thin crowns. It says dieback can signal a serious problem even when roots and bark look fine, because internal decay may be cutting off water to the crown. VCE's SPES-313 checklist asks you to estimate the share of dead limbs, note whether they sit at the top or one side, and look for little or no new growth at branch ends. Compare the tree with healthy ones of the same species nearby.
The scratch test and the snap test
Texas A&M Forest Service describes the scratch test: scrape a little bark off a small branch, and green, moist tissue underneath means that part of the tree is still alive. No green, moist tissue means it is likely dead. N.C. Cooperative Extension's Caswell County office adds a snap test: bend a year-old twig to a right angle, and if it breaks, that part is most likely dead. Test several branches in different parts of the crown, since one dead limb does not mean a dead tree. Leafless trees in winter can still be alive, so repeat the check in late spring if you are unsure.
Signs at the base and roots
UGA Extension says to begin at the base. Mushrooms or conks on the ground around the roots or on the trunk are signs of severe or advanced rot, and root decay cannot be reversed. A healthy tree widens where it meets the ground; a flare buried by soil or mulch, or scarred by mowers, is a warning. UGA adds that construction, septic lines, driveways, and grading inside the drip line can start a decline. N.C. Cooperative Extension notes a tree with roots cut during grading may take up to five years to die. See girdling roots and mulch volcano.
Trunk and bark warning signs
| What you see | What it can mean | Source |
|---|---|---|
| Canker: sunken, dead patch of bark | Disease or injury cutting off flow | UGA C1100; USDA NA-FR-01-96 |
| Bark missing or peeling away | Reduced ability to move water and nutrients | UGA C1100; VCE SPES-313 |
| Small holes, sawdust-like frass | Boring insects, often in stressed trees | VCE SPES-313 |
| Pitch tubes on a pine | Bark beetle attack | VCE SPES-313 |
| Deep crack or cavity | Structural defect; may fail | USDA NA-FR-01-96 |
| Conks or mushrooms on the trunk | Advanced internal decay | UGA C1100; USDA NA-FR-01-96 |
Rows summarize VCE SPES-313, UGA C1100, and USDA NA-FR-01-96. A trained eye still decides what the sign means for your tree.
Dying, dead, or dangerous?
USDA Forest Service's hazardous defects guide says dead wood is not negotiable: dead trees and large dead branches can break and fall at any time, and broken tops or limbs lodged in a crown, called hangers or widow makers, are especially dangerous. The same guide says decay by itself does not make a tree hazardous; it depends on how much sound wood remains and whether the tree can hit a target such as a house, car, or play area. A slowly declining tree away from targets gives you time to watch. A dead one over the driveway does not. Related: dead tree removal cost.
Seasonal look-alikes
UGA Extension notes that leaf damage can come from a seasonal or short-term problem, such as drought, that does not affect long-term health. Pines shed older interior needles every fall, as Virginia DOF explains in its pine yellows note. Early fall color on one limb can be stress rather than death. Watch whether the problem comes back in the same spot next season and whether new buds open. See white pine turning brown and Leyland cypress turning brown.
Common causes in Roanoke Valley yards
VCE's SPES-313 lists incorrect pruning, cutting tree roots, nailing items to the tree, wrapping things around the trunk, misuse of pesticides, and over-fertilizing as human-caused factors. Virginia DOF's oak decline fact sheet adds that drought and old age weaken oaks over years, that oak response to drought can last up to 10 years, and that the first visible sign is crown dieback from the top down and the outside in. Pests and diseases often arrive after the tree is already weak. Local examples: oak wilt in Virginia and ash and oak tree disease.
Can a dying tree be saved?
Sometimes. UGA Extension says a tree with temporary stress may recover, but once a tree is deep in decline, little can be done, and root decay cannot be reversed. Virginia DOF says the same of oak decline once it starts. For a diagnosis, the Virginia Tech Plant Disease Clinic accepts samples through your local Virginia Cooperative Extension office for an in-state fee of $35. For a tree near your home, ISA's Find an Arborist directory lists certified arborists who can judge both health and risk. Related: remove or trim?.
When to call for a removal quote
- A broken top or limb is hanging in the crown.USDA calls these widow makers and says take action right away.
- The tree is dead, or large dead limbs reach a target.Dead wood can fall without warning, per USDA.
- Mushrooms at the base plus a new lean or lifted soil.USDA lists a lean with root exposure or soil mounding as a take-action sign.
- Cankers wrap more than half the trunk.USDA's threshold for action on cankers.
- More than half the roots under the crown were cut.USDA says these trees lack structural support.
Get a tree looked at in the Roanoke Valley
Call (540) 904-1819 or use the form, and we will pass your request to an independent local tree crew. Describe what you saw in the crown, trunk, and base, whether it can reach the house or a driveway, and any recent digging nearby. Related services: arborist risk assessment and dead tree removal.
Sources
- Virginia Cooperative Extension, How to Evaluate a Tree, SPES-313 (PDF) (Checked Oct 14, 2026)
- University of Georgia Extension, Is My Tree Dying?, Circular 1100 (Checked Oct 14, 2026)
- Texas A&M Forest Service, Will my tree make it? Assessing pine and shade tree damage from drought (Checked Oct 14, 2026)
- N.C. Cooperative Extension, Caswell County Center, Is My Tree Dying?? (Checked Oct 14, 2026)
- USDA Forest Service, How to Recognize Hazardous Defects in Trees, NA-FR-01-96 (PDF) (Checked Oct 14, 2026)
- Virginia Department of Forestry, Oak Decline in Virginia (PDF) (Checked Oct 14, 2026)
- Virginia Department of Forestry, Field Notes: Pine Yellows (Checked Oct 14, 2026)
- Virginia Tech Plant Disease Clinic, Submitting Samples (Checked Oct 14, 2026)
- International Society of Arboriculture, Find an Arborist (Checked Oct 14, 2026)
Common questions
How can you tell if a tree is dying?
Look for dieback in the crown, yellow or undersized leaves, early leaf drop, a thin canopy, cankers or missing bark, and mushrooms at the base. UGA and VCE list these signs.
How do I do a scratch test on a tree?
Scrape a little bark from a small branch. Texas A&M Forest Service says green, moist tissue means that part is alive; no green, moist tissue means it is likely dead. Test several branches.
Do mushrooms at the base mean a tree is dying?
UGA Extension says mushrooms or conks around the roots or on the trunk are signs of severe or advanced rot, and root decay cannot be reversed.
Can a dying tree be saved?
Sometimes, if the stress is temporary. UGA says little can be done once a tree is deep in decline. A Virginia Tech clinic sample or an ISA certified arborist can help diagnose it.
When is a dying tree dangerous?
USDA says dead trees, large dead limbs, and hanging broken limbs need action right away if they can hit a house, car, or people. Decay alone does not make a tree hazardous.
Why do trees die in yards?
Virginia Cooperative Extension says most urban tree deaths come from physical causes such as cut roots, poor pruning, girdling, and soil problems, often in the root zone.